UP.
I want to thank Gigabyte Brasil and Aorus for their support.
@aorus_brasil @gigabyte_br

I received a MINI-ITX motherboard (Ga-z270n-gaming 5)
With size of 17x17.
But unfortunately size will not suit my Casemod project.
So I'll be replacing the model I received with another smaller Pico-ITX board (105 x 110 mm) that is also manufactured by GIGABYTE.
It is the BRIX = Pico-ITX Mini-PC Barebone (BRIX) model GB-BSi3H-6100. Intel® I3 6th generation Core Processors

The Brix line is intended for mini pc, uses notebook memories (SODIMM) .M, 2 .Hdmi.Wifi.
Processor is soldered directly on the board etc, I leave the description and link to anyone who wants to meet.

The mini pc has great firepower, to target the internet, videos and some games that does not require video card.
It has several models and configuration.

OBS = The mini pc brix (Pico-ITX), comes from factory with case and the external source card, only that, ssd or hd and memories are bought separately.

you can be proud of the result, those aluminium parts cut and sanded by hand is a real impressive work, but i'm wondering why you choosed such a heavy material, when all parts are finally vinyl covered...wouldn't it be easyer to use thick acrylic?